Rebranded plugbox to PlugOS (plugos)

2022-03-27 11:31:12 +02:00
parent 621e55dbcf
commit cb809d2d03
45 changed files with 42 additions and 51 deletions
@@ -0,0 +1,64 @@
+import { Manifest, RuntimeEnvironment } from "./types";
+import { Sandbox } from "./sandbox";
+import { System } from "./system";
+
+export class Plug<HookT> {
+  system: System<HookT>;
+  sandbox: Sandbox;
+  public manifest?: Manifest<HookT>;
+  readonly runtimeEnv: RuntimeEnvironment;
+  grantedPermissions: string[] = [];
+  name: string;
+
+  constructor(
+    system: System<HookT>,
+    name: string,
+    sandboxFactory: (plug: Plug<HookT>) => Sandbox
+  ) {
+    this.system = system;
+    this.name = name;
+    this.sandbox = sandboxFactory(this);
+    this.runtimeEnv = system.runtimeEnv;
+  }
+
+  async load(manifest: Manifest<HookT>) {
+    this.manifest = manifest;
+    // TODO: These need to be explicitly granted, not just taken
+    this.grantedPermissions = manifest.requiredPermissions || [];
+  }
+
+  syscall(name: string, args: any[]): Promise<any> {
+    return this.system.syscallWithContext({ plug: this }, name, args);
+  }
+
+  canInvoke(name: string) {
+    if (!this.manifest) {
+      return false;
+    }
+    const funDef = this.manifest.functions[name];
+    if (!funDef) {
+      throw new Error(`Function ${name} not found in manifest`);
+    }
+    return !funDef.env || funDef.env === this.runtimeEnv;
+  }
+
+  async invoke(name: string, args: Array<any>): Promise<any> {
+    if (!this.sandbox.isLoaded(name)) {
+      const funDef = this.manifest!.functions[name];
+      if (!funDef) {
+        throw new Error(`Function ${name} not found in manifest`);
+      }
+      if (!this.canInvoke(name)) {
+        throw new Error(
+          `Function ${name} is not available in ${this.runtimeEnv}`
+        );
+      }
+      await this.sandbox.load(name, funDef.code!);
+    }
+    return await this.sandbox.invoke(name, args);
+  }
+
+  async stop() {
+    this.sandbox.stop();
+  }
+}